// This source code is dual-licensed under the Apache License, version
// 2.0, and the Mozilla Public License, version 2.0.
//
// The APL v2.0:
//
//---------------------------------------------------------------------------
//   Copyright (c) 2007-2025 Broadcom. All Rights Reserved.
//
//   Licensed under the Apache License, Version 2.0 (the "License");
//   you may not use this file except in compliance with the License.
//   You may obtain a copy of the License at
//
//       https://www.apache.org/licenses/LICENSE-2.0
//
//   Unless required by applicable law or agreed to in writing, software
//   distributed under the License is distributed on an "AS IS" BASIS,
//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//   See the License for the specific language governing permissions and
//   limitations under the License.
//---------------------------------------------------------------------------
//
// The MPL v2.0:
//
//---------------------------------------------------------------------------
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at https://mozilla.org/MPL/2.0/.
//
//  Copyright (c) 2007-2025 Broadcom. All Rights Reserved.
//---------------------------------------------------------------------------

using System;
using RabbitMQ.Client.Framing;

namespace RabbitMQ.Client.Exceptions
{
    /// <summary>
    /// Thrown when the channel receives an RPC reply that it wasn't expecting.
    /// </summary>
    [Serializable]
    public class UnexpectedMethodException : ProtocolViolationException
    {
        private readonly ProtocolCommandId _receivedCommandId;
        private readonly ProtocolCommandId _expectedCommandId;

        internal UnexpectedMethodException(ProtocolCommandId receivedCommandId, ProtocolCommandId expectedCommandId)
        {
            _receivedCommandId = receivedCommandId;
            _expectedCommandId = expectedCommandId;
        }

        /// <summary>
        /// Retrieves the class ID number of this method, as defined in the AMQP specification XML.
        /// </summary>
        public ushort ProtocolClassId => (ushort)((uint)_receivedCommandId >> 16);

        /// <summary>
        /// Retrieves the method ID number of this method, as defined in the AMQP specification XML.
        /// </summary>
        public ushort ProtocolMethodId => (ushort)((uint)_receivedCommandId & 0xFFFF);

        /// <summary>
        /// Retrieves the name of this method - for debugging use.
        /// </summary>
        public string ProtocolMethodName => _receivedCommandId.ToString();

        /// <summary>
        /// Retrieves the expected class ID number of this method, as defined in the AMQP specification XML.
        /// </summary>
        public ushort ExpectedProtocolClassId => (ushort)((uint)_expectedCommandId >> 16);

        /// <summary>
        /// Retrieves the expected method ID number of this method, as defined in the AMQP specification XML.
        /// </summary>
        public ushort ExpectedProtocolMethodId => (ushort)((uint)_expectedCommandId & 0xFFFF);

        /// <summary>
        /// Retrieves the expected name of this method - for debugging use.
        /// </summary>
        public string ExpectedProtocolMethodName => _expectedCommandId.ToString();
    }
}
